Data sources and licences
Version of 19 September 2026.
pfasnearme measures nothing. Every value on the site comes from an official or utility publication, reproduced as published with its sample date, its source and its licence. This page lists those sources for every covered country, with the number of municipalities each one feeds at this build.
France
Country overview · Data retrieved on
- Hub'eau, Qualité de l'eau potable (Ministère de la Santé / OFB / BRGM) · 34,843 communes · Licence: Licence Ouverte / Open Licence (Etalab)
Belgium
Country overview · Data retrieved on
- Vlaamse Milieumaatschappij (VMM), Kwaliteit van het drinkwater 2024, bijlage 2 · 323 cities · Licence: Modellicentie voor gratis hergebruik (Vlaamse overheid) – https://vmm.vlaanderen.be/disclaimer
Flanders: Vlaamse Milieumaatschappij (VMM), drinking water quality 2024, one annual figure per supply area (median and maximum of the measurements in the network). Licence: free reuse with attribution (Flemish model licence). Next edition expected in October 2026.
- Service public de Wallonie (SPW-ARNE) / SWDE, Etat des lieux du monitoring PFAS dans les eaux distribuées · 262 cities · Licence: reuse licence being confirmed with the source; reproduced with full attribution meanwhile
Wallonia: Service public de Wallonie (SPW-ARNE) with SWDE, PFAS monitoring of distributed water, one row per sample and distribution zone, September 2023 to December 2025. The reuse licence for this document is still to be confirmed with SPW; attributed to SPW-ARNE and SWDE meanwhile.
Germany
Country overview · Data retrieved on
- Berliner Wasserbetriebe – Analysendaten der Wasserwerke, Jahresmedianwerte 2025 · 1 cities · Licence: Urheberrechtlich geschützte Veröffentlichung der Berliner Wasserbetriebe; Sachdaten mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
Analysis data of the waterworks, annual medians per works (PDF). The next annual medians are expected in the spring of the following year.
- Hamburg Wasser – Detailanalysen der Wasserwerke (Stand 2026-01-29) · 1 cities · Licence: Veröffentlichung von Hamburg Wasser (Hamburger Wasserwerke GmbH); Sachdaten mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
Detailed analyses of the waterworks, annual means per works (HTML tables). Hamburg Wasser refreshes the tables at the start of the year; quarterly values continuously.
- Bayerisches Landesamt für Gesundheit und Lebensmittelsicherheit (LGL) – Messwerte zu PFAS im Trinkwasser, Landkreis Altötting · 15 cities · Licence: Veröffentlichung des LGL Bayern; amtliche Messwerte mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
LGL measurements of PFAS in drinking water, Landkreis Altötting (official control sampling, HTML table). The authorities sample quarterly; the next round appears about two months after the end of the quarter.
- Stadtwerke Duisburg – Trinkwasseranalyse, Jahresmittelwerte 2025 und Quartal 1/2026 · 1 cities · Licence: Veröffentlichung von Stadtwerke Duisburg AG; Sachdaten mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
Drinking-water analysis per supply area, annual means and latest quarter (PDF). Quarterly, about a month after the end of the quarter.
- N-ERGIE – Trinkwasser-Analysewerte im Versorgungsgebiet (Proben 2026-02-11 bis 2026-04-08) · 1 cities · Licence: Veröffentlichung von N-ERGIE Aktiengesellschaft; Sachdaten mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
Drinking-water analysis values, extracts per network zone (PDF, single samples). No fixed schedule; the PDF is replaced when new analyses are available.
- Eigenbetrieb Wasser und Abwasser Wuppertal – Trinkwasseranalyse 2025, Jahresmittelwerte · 1 cities · Licence: Veröffentlichung von WSW Wuppertaler Stadtwerke / Stadt Wuppertal; Sachdaten mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
Drinking-water analysis, annual means of the three waterworks (PDF). Annually, expected in the middle of the following year.
- MVV Netze – Untersuchung von Trinkwasser (Parameter Typ B), Probenahme 2026-08-03 · 1 cities · Licence: Veröffentlichung von MVV Energie AG / MVV Netze GmbH; Sachdaten mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
Drinking-water analysis (type B parameters), lab report per waterworks (PDF). Every two months; the reports are replaced at the same address.
- Stadtwerke Rastatt – Trinkwasseranalyse (Stand 2026-03-10) · 1 cities · Licence: Stadtwerke Rastatt; die Analyse ist im Open-Data-Portal re@di / GovData unter CC BY 4.0 veröffentlicht (Ausgabe 2024), die Website-Tabelle ohne eigene Lizenzangabe
Drinking-water analysis per waterworks (HTML table; 2024 edition as open data under CC BY 4.0). Annually, expected in March.
- RheinEnergie – Trinkwasseranalyse, Jahresmittelwerte 2025 · 1 cities · Licence: Veröffentlichung von RheinEnergie AG; Sachdaten mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
Drinking-water analysis per supply zone (left and right bank of the Rhine), annual means with itemised PFAS (PDF). Annually, the next edition expected in the spring of the following year.
- Leipziger Wasserwerke – Jahresdurchschnittsanalyse 2025 · 1 cities · Licence: Veröffentlichung von Kommunale Wasserwerke Leipzig GmbH; Sachdaten mit Quellenangabe wiedergegeben (keine offene Lizenz angegeben)
Annual average analysis per supply point (PDF); individual compounds are not published. Annually, expected in March of the following year.
- Stadtwerke Münster – Trinkwasseranalytik 2024, Jahresmittelwerte (Open Data Münster) · 1 cities · Licence: Open Data Münster, Lizenz im Datensatz nicht angegeben („notspecified“); Herausgeber Stadtwerke Münster
Drinking-water analytics, annual means per waterworks (XLSX, Open Data Münster). Annually; the 2025 edition exists only as an image PDF so far and is taken over once it is machine-readable.
United States
Country overview · Data retrieved on
- U.S. Environmental Protection Agency, Fifth Unregulated Contaminant Monitoring Rule (UCMR 5) occurrence data, final dataset (August 2026) · 1,493 water systems · Licence: Public domain (U.S. federal government work, 17 U.S.C. § 105)
System registry from EPA SDWIS/ECHO (2026Q2 edition); service areas from EPA ORD (model code MIT); geography from the U.S. Census Bureau. Values are UCMR 5 entry-point results; "UCMR 5 results do not indicate compliance or noncompliance with the PFAS drinking water standards".
Finland
Country overview · Data retrieved on
- Ruokavirasto (VATI) / Suomen ympäristökeskus Syke, Juomavesidirektiivi-rajapinta · 287 cities · Licence: CC BY 4.0
Norway
Country overview · Data retrieved on
- Mattilsynet, Vannverk (vannforsyningssystem_analyse) · 357 cities · Licence: NLOD 2.0
Estonia
Country overview · Data retrieved on
- Terviseamet, veeterviseohutuse infosüsteem (VTI) avaandmed · 78 cities · Licence: Avaliku teabe seadus § 31 (avaandmed, litsentsi ei ole avaldatud)
Netherlands
Country overview · Data retrieved on
- Evides Waterbedrijf, rapport PFAS per productielocatie · 29 cities · Licence: Bron: Evides Waterbedrijf, rapport PFAS productielocatie Berenplaat, periode vanaf 2025-09-02 (geen open licentie, overgenomen met bronvermelding); Bron: Evides Waterbedrijf, rapport PFAS productielocatie Kralingen, periode vanaf 2025-09-02 (geen open licentie, overgenomen met bronvermelding); Bron: RIVM, INSPIRE drinkwaterkwaliteit, jaar 2025
PFAS report per production location, monthly means of the EFSA-4 sum, the sum of 20 PFAS (EDR20 + NL2) and the PEQ sum (one PDF per location; Midden-Zeeland as delivered blended water) (monthly). Evides updates the reports monthly; the next monthly column appears within a few weeks of the end of the month.
- Waternet, Drinkwater wettelijk te meten stoffen, jaar 2025 en 1e kwartaal 2026 · 5 cities · Licence: Bron: Waternet (gemeente Amsterdam), Drinkwater productielocatie Leiduin, wettelijk te meten stoffen, jaar 2025 (geen open licentie, overgenomen met bronvermelding); Bron: Waternet (gemeente Amsterdam), Drinkwater productielocatie Weesperkarspel, wettelijk te meten stoffen, jaar 2025 (geen open licentie, overgenomen met bronvermelding)
Statutory drinking-water parameters per production location (Leiduin, Weesperkarspel), annual means and latest quarter with itemised PFAS (PDF) (annually, with quarterly reports in between). Waternet publishes the annual report in the spring of the following year and quarterly reports a few weeks after the quarter.
- Brabant Water, waterkwaliteitsgegevens per productielocatie, 2026 Q2 · 55 cities · Licence: Bron: Brabant Water, waterkwaliteitsgegevens productielocatie Eindhoven, 2026 Q2 (geen open licentie, overgenomen met bronvermelding); Bron: Brabant Water, waterkwaliteitsgegevens productielocatie Welschap, 2026 Q2 (geen open licentie, overgenomen met bronvermelding); Bron: RIVM, INSPIRE drinkwaterkwaliteit, jaar 2025
water-quality data per production location, quarterly means of the sum of PFAS (20 EU), the PEQ sum and TFA (one PDF per pumping station; the four EFSA compounds are not itemised) (quarterly). Brabant Water replaces the PDFs each quarter, about a month after the end of the quarter.
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Our texts, calculations, charts and JSON files are under the CC BY 4.0 licence. Reuse them freely, commercially too, by crediting "pfasnearme" and linking the page. An open source (Licence Ouverte, Flemish model licence, CC BY, NLOD) also allows commercial reuse provided you cite it with its update date; copy the source line as it appears on the page. Creative Commons Attribution 4.0 (CC BY 4.0)
Values taken from utility publications without an open licence are public facts; we cite them with the utility's exact attribution. If you reuse them in turn, credit the utility, its publication and its date as we do, and respect its terms of use. A source whose licence is "being confirmed" is flagged as such on every page.
Machine-readable data: one JSON file per municipality (/report/{country}/{slug}.json), the per-country sitemaps (/sitemap-communes-fr-0.xml, /sitemap-communes-be-0.xml, /sitemap-communes-de-0.xml, /sitemap-communes-us-nj-0.xml, /sitemap-communes-us-pa-0.xml, /sitemap-communes-us-mi-0.xml, /sitemap-communes-us-ma-0.xml, /sitemap-communes-us-ny-0.xml, /sitemap-communes-fi-0.xml, /sitemap-communes-ee-0.xml, /sitemap-communes-nl-0.xml, /sitemap-index.xml) and the summary for AI assistants (/llms.txt, /llms-full.txt). There is no bulk API; please crawl at a reasonable pace.
- France: /report/fr/han-les-juvigny-55226.json (Han-lès-Juvigny)
- Belgium: /report/be/saint-hubert-84059.json (Saint-Hubert)
- Germany: /report/de/berlin-11000000.json (Berlin)
- United States: /report/us/collegeville-trappe-joint-pwd-pa1460022.json (Collegeville Trappe Joint PWD)
- Netherlands: /report/nl/amsterdam-0363.json (Amsterdam)
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